ThumbButtonInfoCollection Class

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Represents a collection of ThumbButtonInfo objects that are associated with a Window.

Inheritance Hierarchy

System.Object
  System.Windows.Threading.DispatcherObject
    System.Windows.DependencyObject
      System.Windows.Freezable
        System.Windows.Media.Animation.Animatable
          System.Windows.FreezableCollection<ThumbButtonInfo>
            Microsoft.Windows.Shell.ThumbButtonInfoCollection

Namespace:  Microsoft.Windows.Shell
Assembly:  Microsoft.Windows.Shell (in Microsoft.Windows.Shell.dll)

Syntax

'Declaration
Public Class ThumbButtonInfoCollection _
    Inherits FreezableCollection(Of ThumbButtonInfo)

public class ThumbButtonInfoCollection : FreezableCollection<ThumbButtonInfo>

public ref class ThumbButtonInfoCollection : public FreezableCollection<ThumbButtonInfo^>

type ThumbButtonInfoCollection =  
    class
        inherit FreezableCollection<ThumbButtonInfo>
    end

public class ThumbButtonInfoCollection extends FreezableCollection<ThumbButtonInfo>

The ThumbButtonInfoCollection type exposes the following members.

Constructors

  Name Description
Public method ThumbButtonInfoCollection Initializes a new instance of the ThumbButtonInfoCollection class.

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Properties

  Name Description
Public property CanFreeze Gets a value that indicates whether the object can be made unmodifiable. (Inherited from Freezable.)
Public property Count Gets the number of elements contained by this FreezableCollection<T>. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public property DependencyObjectType Gets the DependencyObjectType that wraps the CLR type of this instance.  (Inherited from DependencyObject.)
Public property Dispatcher Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.)
Public property HasAnimatedProperties Gets a value that indicates whether one or more AnimationClock objects is associated with any of this object's dependency properties. (Inherited from Animatable.)
Public property IsFrozen Gets a value that indicates whether the object is currently modifiable. (Inherited from Freezable.)
Public property IsSealed Gets a value that indicates whether this instance is currently sealed (read-only). (Inherited from DependencyObject.)
Public property Item Gets or sets the element at the specified index. (Inherited from FreezableCollection<ThumbButtonInfo>.)

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Methods

  Name Description
Public method Add Adds the specified object to the end of the FreezableCollection<T>. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method ApplyAnimationClock(DependencyProperty, AnimationClock) Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the SnapshotAndReplace handoff behavior is used. (Inherited from Animatable.)
Public method ApplyAnimationClock(DependencyProperty, AnimationClock, HandoffBehavior) Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the specified HandoffBehavior is used. (Inherited from Animatable.)
Public method BeginAnimation(DependencyProperty, AnimationTimeline) Applies an animation to the specified DependencyProperty. The animation is started when the next frame is rendered. If the specified property is already animated, the SnapshotAndReplace handoff behavior is used. (Inherited from Animatable.)
Public method BeginAnimation(DependencyProperty, AnimationTimeline, HandoffBehavior) Applies an animation to the specified DependencyProperty. The animation is started when the next frame is rendered. If the specified property is already animated, the specified HandoffBehavior is used. (Inherited from Animatable.)
Public method CheckAccess Determines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
Public method Clear Removes all elements from the collection. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method ClearValue(DependencyProperty) Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier. (Inherited from DependencyObject.)
Public method ClearValue(DependencyPropertyKey) Clears the local value of a read-only property. The property to be cleared is specified by a DependencyPropertyKey. (Inherited from DependencyObject.)
Public method Clone Creates a modifiable clone of this FreezableCollection<T> and its contents, making deep copies. If this collection (or its contents) has animated dependency properties, the property’s base value is copied, not its current animated value. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Protected method CloneCore Makes this instance a clone (deep copy) of the specified FreezableCollection<T> using base (non-animated) property values. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method CloneCurrentValue Creates a modifiable copy of this FreezableCollection<T> and its contents, making deep copies of this object's current values. If this object (or the objects it contains) contains animated dependency properties, their current animated values are copied. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Protected method CloneCurrentValueCore Makes this instance a modifiable clone (deep copy) of the specified FreezableCollection<T> using current property values. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method CoerceValue Coerces the value of the specified dependency property. This is accomplished by invoking any CoerceValueCallback function specified in property metadata for the dependency property as it exists on the calling DependencyObject. (Inherited from DependencyObject.)
Public method Contains Determines whether this FreezableCollection<T> contains the specified value. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method CopyTo Copies the entire FreezableCollection<T> to a compatible one-dimensional array, starting at the specified index of the target array. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Protected method CreateInstance Initializes a new instance of the Freezable class. (Inherited from Freezable.)
Protected method CreateInstanceCore Creates a new instance of the collection. (Overrides FreezableCollection<T>.CreateInstanceCore().)
Public method Equals Determines whether a provided DependencyObject is equivalent to the current DependencyObject. (Inherited from DependencyObject.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method Freeze Makes the current object unmodifiable and sets its IsFrozen property to true. (Inherited from Freezable.)
Protected method FreezeCore Makes this FreezableCollection<T> object unmodifiable or determines whether it can be made unmodifiable. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method GetAnimationBaseValue Returns the non-animated value of the specified DependencyProperty. (Inherited from Animatable.)
Public method GetAsFrozen Creates a frozen copy of the Freezable, using base (non-animated) property values. Because the copy is frozen, any frozen sub-objects are copied by reference. (Inherited from Freezable.)
Protected method GetAsFrozenCore Makes this instance a frozen clone of the specified FreezableCollection<T> using base (non-animated) property values. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method GetCurrentValueAsFrozen Creates a frozen copy of the Freezable using current property values. Because the copy is frozen, any frozen sub-objects are copied by reference. (Inherited from Freezable.)
Protected method GetCurrentValueAsFrozenCore Makes this instance a frozen clone of the specified Freezable. If this object has animated dependency properties, their current animated values are copied. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method GetEnumerator Returns an enumerator for the entire FreezableCollection<T>. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method GetHashCode Gets a hash code for this DependencyObject. (Inherited from DependencyObject.)
Public method GetLocalValueEnumerator Creates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject. (Inherited from DependencyObject.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public method GetValue Returns the current effective value of a dependency property on this instance of a DependencyObject. (Inherited from DependencyObject.)
Public method IndexOf Searches for the specified object and returns the zero-based index of the first occurrence within the entire FreezableCollection<T>. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method Insert Inserts the specified object into the FreezableCollection<T> at the specified index. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method InvalidateProperty Re-evaluates the effective value for the specified dependency property (Inherited from DependencyObject.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Protected method OnChanged Called when the current Freezable object is modified. (Inherited from Freezable.)
Protected method OnFreezablePropertyChanged(DependencyObject, DependencyObject) Ensures that appropriate context pointers are established for a DependencyObjectType data member that has just been set. (Inherited from Freezable.)
Protected method OnFreezablePropertyChanged(DependencyObject, DependencyObject, DependencyProperty) This member supports the Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code. (Inherited from Freezable.)
Protected method OnPropertyChanged Overrides the DependencyObject implementation of OnPropertyChanged to also invoke any Changed handlers in response to a changing dependency property of type Freezable. (Inherited from Freezable.)
Public method ReadLocalValue Returns the local value of a dependency property, if it exists. (Inherited from DependencyObject.)
Protected method ReadPreamble Ensures that the Freezable is being accessed from a valid thread. Inheritors of Freezable must call this method at the beginning of any API that reads data members that are not dependency properties. (Inherited from Freezable.)
Public method Remove Removes the first occurrence of the specified object from the FreezableCollection<T>. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method RemoveAt Removes the object at the specified zero-based index of the FreezableCollection<T>. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Public method SetValue(DependencyProperty, Object) Sets the local value of a dependency property, specified by its dependency property identifier. (Inherited from DependencyObject.)
Public method SetValue(DependencyPropertyKey, Object) Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property. (Inherited from DependencyObject.)
Protected method ShouldSerializeProperty Returns a value that indicates whether serialization processes should serialize the value for the provided dependency property. (Inherited from DependencyObject.)
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
Public method VerifyAccess Enforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
Protected method WritePostscript Raises the Changed event for the Freezable and invokes its OnChanged method. Classes that derive from Freezable should call this method at the end of any API that modifies class members that are not stored as dependency properties. (Inherited from Freezable.)
Protected method WritePreamble Verifies that the Freezable is not frozen and that it is being accessed from a valid threading context. Freezable inheritors should call this method at the beginning of any API that writes to data members that are not dependency properties. (Inherited from Freezable.)

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Events

  Name Description
Public event Changed Occurs when the Freezable or an object it contains is modified. (Inherited from Freezable.)

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Explicit Interface Implementations

  Name Description
Explicit interface implemetationPrivate method IList.Add Infrastructure. For a description of this member, see IList.Add. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate event INotifyCollectionChanged.CollectionChanged For a description of this member, see CollectionChanged. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate method IList.Contains Infrastructure. For a description of this member, see IList.Contains. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate method ICollection.CopyTo Infrastructure. For a description of this member, see ICollection.CopyTo. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate method IEnumerable<T>.GetEnumerator Infrastructure. For a description of this member, see IEnumerable<T>.GetEnumerator. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate method IEnumerable.GetEnumerator Infrastructure. For a description of this member, see IEnumerable.GetEnumerator. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate method IList.IndexOf Infrastructure. For a description of this member, see IList.IndexOf. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate method IList.Insert Infrastructure. For a description of this member, see IList.Insert. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate property IList.IsFixedSize Infrastructure. For a description of this member, see IList.IsFixedSize. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate property ICollection<T>.IsReadOnly Infrastructure. For a description of this member, see ICollection<T>.IsReadOnly. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate property IList.IsReadOnly Infrastructure. For a description of this member, see IList.IsReadOnly. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate property ICollection.IsSynchronized Infrastructure. For a description of this member, see ICollection.IsSynchronized. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate property IList.Item Infrastructure. For a description of this member, see IList.Item. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate event INotifyPropertyChanged.PropertyChanged For a description of this member, see PropertyChanged. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate method IList.Remove Infrastructure. For a description of this member, see IList.Remove. (Inherited from FreezableCollection<ThumbButtonInfo>.)
Explicit interface implemetationPrivate property ICollection.SyncRoot Infrastructure. For a description of this member, see ICollection.SyncRoot. (Inherited from FreezableCollection<ThumbButtonInfo>.)

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Remarks

ThumbButtonInfoCollection is a strongly-typed FreezableCollection<T> that is used to support declarations in Extensible Application Markup Language (XAML).

The Windows 7 shell allows a maximum of seven buttons in the taskbar preview. If more than seven ThumbButtonInfo objects are added to the ThumbButtonInfoCollection, the additional objects are treated as overflow. When a button is Collapsed, it does not have any visible elements and no space is reserved for it. In this case, additional buttons from the ThumbButtonInfoCollection overflow are displayed.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

Microsoft.Windows.Shell Namespace

ThumbButtonInfos